A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5915-00-378-5585
NSN 5975-01-304-8530
NSN 5965-00-777-7037
NSN 6685-01-425-7360
NSN 5905-01-122-4302
NSN 6620-00-239-6153
NSN 6610-00-826-7235
NSN 6105-00-055-3503
NSN 5915-01-011-4750
NSN 5835-01-315-4816
NSN 2925-01-550-0177
NSN 5990-00-054-4785